Green anti-solvent processed white light emitting perovskite phosphors in one step

Wang, Bing; Liu, Yingdu; Deng, Zhiliang; Li, Pei; Wang, Wanfu; Ouyang, Xiaoping; Xu, Qiang

doi:10.1016/j.physb.2022.413788

Cited by 4 publications

(4 citation statements)

References 46 publications

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“…First, nanoparticles were prepared by the anti‐solvent method reported before. [ 23 ] And then the dried Cs 3 Cu 2 I 5 powder was mixed with MnI 2 powders in a certain molar ratio and fully ground. Finally, the light yellow Cs 3 Cu 2 I 5 : Mn powder can be obtained by placing it in a vacuum‐drying oven for 24 h at 80 °C.…”

Section: Resultsmentioning

confidence: 99%

High‐Resolution X‐Ray Imaging of Mn Enhanced Lead‐Free Halide Scintillators in Pixelated Array Structures

Wang

Ouyang

et al. 2023

Advanced Optical Materials

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X‐ray photography plays an important role in the fields of medical treatment, security inspection, and non‐destructive testing. The high image quality depends on X‐ray detectors with excellent properties. To meet the future demand for high‐performance scintillation screens, adding a new luminescent center in Cs3Cu2I5 by doping is considered. The successful incorporation of Mn brought a new luminescence peak at 565 nm. Different excitation modalities such as ultraviolet and X‐rays have the ability to tune luminescence. X‐ray can promote the energy transfer efficiency of self‐trapped excitons and non‐radiative intermediate trap states to doping Mn2+ ions. This results in a higher radioluminescence intensity of a radioluminescence light yield of 65 000 Photons MeV−1. Subsequently, a Cs3Cu2I5: Mn scintillation screen is prepared by anodized aluminum oxide (AAO) template. The array channel structure of the AAO template strongly suppresses the internal scintillation light scattering, allowing more scintillation photons to be emitted efficiently. Under the combined effect of Mn‐enhanced radioluminescence properties and AAO template suppressed light scattering, it obtains the lowest detection limit of 49 nGyair s−1. High X‐ray imaging quality has been achieved for circuit boards, beetles, and ball‐point pens and reached a high X‐ray imaging resolution of 11.8 lp mm−1.

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Section: Resultsmentioning

confidence: 99%

High‐Resolution X‐Ray Imaging of Mn Enhanced Lead‐Free Halide Scintillators in Pixelated Array Structures

Wang

Ouyang

et al. 2023

Advanced Optical Materials

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“…As we discussed in above sections, a broad range of TCHs demonstrate attractive characters for optoelectronic devices. [216][217][218][219][220][221][222][223][224][225][226][227][228][229][230][231][232][233] Although the most efficient devices still employ lead-containing perovskites, the issue of lead-toxic is driving the development of novel TCHs. In this section, we will discuss the potential optoelectronic devices based on the newly-emerging TCHs, focusing on the phosphor-converted WLEDs, electroluminescent LEDs, anti-counterfeiting, X-ray scintillators, photodetectors, sensors, and memristors.…”

Section: Optoelectronic Applications Of Tchsmentioning

confidence: 99%

Recent Advances and Opportunities of Eco‐Friendly Ternary Copper Halides: A New Superstar in Optoelectronic Applications

Lin

et al. 2023

Advanced Materials

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Recently, the newly‐emerging lead‐free metal‐halide materials with less toxicity and superior optoelectronic properties have received wide attention as the safer and potentially more robust alternatives to lead‐based perovskite counterparts. Among them, ternary copper halides (TCHs) have become a vital group due to their unique features, including abundant structural diversity, ease of synthesis, unprecedented optoelectronic properties, high abundance, and low cost. Although the recent efforts in this field have made certain progresses, some scientific and technological issues still remain unresolved. Herein, a comprehensive and up‐to‐date overview of recent progress on the fundamental characteristics of TCH materials and their versatile applications is presented, which contains topics such as: i) crystal and electronic structure features and synthesis strategies; ii) mechanisms of self‐trapped excitons, luminescence regulation, and environmental stability; and iii) their burgeoning optoelectronic devices of phosphor‐converted white light‐emitting diodes (WLEDs), electroluminescent LEDs, anti‐counterfeiting, X‐ray scintillators, photodetectors, sensors, and memristors. Finally, the current challenges together with future perspectives on the development of TCH materials and applications are also critically described, which is considered to be critical for accelerating the commercialization of these rapidly evolving technologies.

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“…Lead-based halide perovskites light-emiting diodes (PeLEDs) are a promising technology with potential application in display, lighting, communications et al [1][2][3][4][5][6] Since the initial report on electroluminescence, PeLEDs have quickly achieved high efficiency in green, red and near-infrared luminescence. [3,7,8] For green LEDs, various strategies such as multiple-ligand passivation, interface engineering, structural optimization have been proposed to enhance the radiative recombination for LEDs.…”

Section: Introductionmentioning

confidence: 99%

Blue Lead‐Free Perovskite Derivatives: Structural Diversity, Luminescence Properties and Light‐Emitting Diode Applications

Zhao,

Han,

Wang

et al. 2024

Advanced Optical Materials

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Halide perovskite light‐emitting diodes (LEDs) have made remarkable advancements in both efficiency and stability. However, when compared to green and red LEDs, blue perovskite LEDs still lag behind in terms of efficiency and stability. Presently, efficient blue LEDs primarily rely on lead‐based perovskites, which goes against the environmentally friendly practices and restricts potential industrial applications. Consequently, there has been a surge of interest in academic research toward developing blue LEDs using lead‐free perovskites. This paper provides a comprehensive review of the structural diversity of lead‐free perovskite derivatives used for blue emission, encompassing Sn‐, Zr‐, Bi‐, Sb‐, Cu‐, Zn‐based halides as well as double perovskites. Various material synthesis techniques are discussed, such as nanocrystal preparation and film preparation. Additionally, the photoluminescence properties for different energy band structures are outlined, along with the luminescence mechanism involving energy transfer and strategies for enhancing luminous efficiency. The advancement in efficiency and stability of lead‐free perovskite LEDs is also examined in this review. Finally, the current challenges and future opportunities in advancing research on blue lead‐free perovskite derivatives and their potential application in LED technology is emphasized.

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Green anti-solvent processed white light emitting perovskite phosphors in one step

Cited by 4 publications

References 46 publications

High‐Resolution X‐Ray Imaging of Mn Enhanced Lead‐Free Halide Scintillators in Pixelated Array Structures

High‐Resolution X‐Ray Imaging of Mn Enhanced Lead‐Free Halide Scintillators in Pixelated Array Structures

Recent Advances and Opportunities of Eco‐Friendly Ternary Copper Halides: A New Superstar in Optoelectronic Applications

Blue Lead‐Free Perovskite Derivatives: Structural Diversity, Luminescence Properties and Light‐Emitting Diode Applications

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